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ERG

Emergency Response Guide

The Emergency Response Guide (ERG) is a guide for first responders during the initial phase of a dangerous goods or hazardous materials incident. Remember, never attempt to handle a material or chemical that you are not qualified to handle. "When in doubt, get out". Search the ERG by material name or material ID number. Example: "Chlorine" or "1017".

NFPA fire diamond

The NFPA (National Fire Protection Association) fire diamond is a symbol used to alert first responders to the hazards involved with a given material. The fire diamond is based on standards listed in the NFPA document: “Standard System for the Identification of the Hazards of Materials for Emergency Response” and is designed to be easily understood.

The fire diamond consists of 4 color-coded quadrants:

Red

on the top indicating fire hazard.

Blue

on the left indicating health hazard.

Yellow

on the right indicating chemical instability hazard.

White

on the bottom indicating special hazards.

Fire, health, and instability hazards are rated on a scale from 0 (no hazard) to 4 (severe hazard). Special hazards are listed by symbols specific to the material.

Rating NumberHealth HazardFire HazardInstability Hazard
4Can cause death or serious injury
Ignites below 73°FMay explode at normal temperatures and pressures
3Can cause serious or permanent injuryIgnites below 100°FMay explode at high temperature or shock
2Can cause temporary incapacitation or residual injuryIgnites below 200°FViolent chemical change at high temperatures and pressures
1Can cause significant irritationIgnites above 200°FUnstable at high temperatures
0Poses no health hazardWill not burnStable
Special Hazard
ACID
Acid
ALK
Alkali
COR
Corrosive
OXY
Oxidizer
SA
Simple Asphyxiate
W
Water Reactive

Biohazard

Radioactive